Improvement in gig-mills



UNITED STATES PATENT OFFICE.

JOHN G. MILLAR, OF TROY, NEW YORK, ASSIGNOR To HIMSELF AND ROBERT D. CUNNINGHAM, or SAME PLACE.

IMPROVEMENT IN GIG-MILLS.

Specification forming part of Letters Patent No. 36,559, dated September 23, 1862.

To all whom it may concern;

Be'it known that I, J HN G. MILLAR, of Troy, in the county of Bensselaer and State of New, York, have invented certain new and useful Improvements on a Gig-Mill for Napping Cloth; and-I do hereby declare that the fol;

lowing is a full and exact description of the same, reference being had tothe annexed d rawings, and to the letters of reference marked 'thereon, making a part of this specification,

in which-'- I Figure 1 is a perspective view of the machine. Fig. 2 is an elevation of the left-hand side of Fig. 1. Fig. 3 is a view of an imprqved stretching-roller temporarily detached from the machine and used in the machine in dress jng some descriptions of cloth. Fig. 4. is a longitudinal, sectional view of an improved gigging-roller for napping the back side of the cloth, and Fig. 5 is a cross-section of the same.

- points acting upon the blankets or clothmay be regulated-from the full length of the point to any smaller length; or the action of the card or teasel points, when desired, may be wholly excluded from action on the surface of the cloth by means of rcgulatingrods operated,

for the purposes above, in the manner as hereinafter fully described; and it also consists in an improved construction and arrangement of the'drawing-rollers by providing them with adjustable bearings for the purpose of regulatingthe tension of the rollers on the cloth to the proper amount required for drawing the cloth over the napping-cylinder in the manner as hereinafter set forth.

To enable others skilled in the art of constructing gig-mills to make and use my improved mill, I now describe its construction and operation as follows:

A A is the frame-work of the machine.

' B B is the nappingcylinder.

. is the driving-pulley of napping-cylinder.

a a are tiebars or rails constructed in a hook form at the end I). (See Fig. 1.)

D D are gig-rods for holding the .teasels while napping the cloth. These rods have slots c'c through them at each end and achamfered notch made on each corner, that the corner ends of the rod may fit into the hooks b, which, with the aid of the dogs (i d, passing through the slots into the rim of the cylinder B, secure, while napping cloth, the gig-rods firmly to the cylinder in the manner as shown in Fig. l and admit of each of the rods being reversed end for end' at will.

The teasels or cards used in napping the cloth are secured to the gig-rods in any'of the known ways suitable for that purpose. The teasels are arranged in the gig-rods so as to have their points all in the same general direction; but the gig-rods holding the teasels are to be arranged uponthe face of the napping-cylinder B in pairs and in such a manner that each suecessivepair of gig-rods shall present their teaselpoints in opposite directions to each other; or each gig-rod holding teasels to operate by direct motion of cylinder can be arranged upon the face of the cylinder in reciprocal succession, with each gig-rod holding teasels to operate by reverse motion of c'ylinder, so as to secure a balance arrangement and equal distribution around the face of the napping-cylinder.of the teasels both for the direct motion and for the reverse motion of said cylinder, alternating these motions as the progress of the napping process may require.

E E are adj usting-rollers for regulating the contact of the cloth on the teasels. These rollers are afli xed to head-pieces a 0,1 3 being fixed, and E a loose, roller. The head-pieces are pivoted to the studs f f and their adjustment regulated by means of the set-screws g g.

F is a napping-roller for napping the back side of blankets or of cloth, and may act conjointly with the napping-cylinder B.

G is the cylinder-stock, secured to the shaft h. The stock has formed in it a number of grooves, i i, in a line with its axis. The bottoms of these grooves form inclined planes,as seen in Fig. 4.. r

H H are regulating-rods, whose sectional form is seen in Fig. 5. The bottom sides of these rods are inclined at the same pitch as as thebot-toms of the grooves ii,sothat when the rod slides on the inclined plane the upper or regulating edge of the rod may always be parallel to the surface of the cylinder. The rods are prevented from falling out of position by the button a, aflixed to the bottom of the rod and working through a slot in the incline plane of the stock G, and catching on the edges of a recess made for that purpose. Teasels or cards for napping are afiixed to this cylinder by any of the known ways.

The regulation of the bars is effected by the hand-wheels I I, working on the screw-thread cutontheshaft h. Byruuning thehand-wheels to and from the stock G the regulating-rods are made to move up or down the inclined planes i z, thus regulating the amount of edge of rod above the rollerssurfitce, consequently regulating the length of teasel-poiuts acting on the cloth, or excluding such action entirely. The tension of this napping-roller on the cloth is adjusted by means of the set-screws 90.10, shifting the bearings of the roller. The roller takesits motion from a pulley on shaft of the napping-cylinder by abelt, as seen in Fig. 1.

J is a stretchingroller for stretching the cloth by continuous "action upon the cloths surface from its center outward to its selvage edge while the roller is in revolution. Uponthe surface of this roller, starting from the central surface and proceeding to the end edges, is aflixed a series'of screw-threaded rods, jj, or their equivalents. 'These'rods are arranged in spiral courses upon the surface of the cylinder, in the manner as seen in Fig. 3. This stretching-roller is used in place of the stretching-roller Z- when napping the lighter descriptions of cloth. This stretching or breaking roller Z is constructed in two cylindrical sections, 1 and 2, arranged upon the shaft 3. These sections have spiral grooves holding the spiral ribs 4, which operate each its respective groove, each rib having a spring, 5', under its end, but with play enough to allow the rib to be depressed somewhat into the groove when necessary. Tl 3 sections 1 and 2, with their spiral ril" a. are held in adjusted positions by means of the set-screw wheels V W, working upon screw-threads cut upon the shaft 3. This roller may be made to perform simultaneously, in addition to stretching the cloth, that of napping the cloth, by affixing in any of the known ways teasels or cards to-the surfaces of the rollers between the spiral ribs. 4

K K K" are drawingrollers of the usual form for drawing the cloth over the nappingcylinder. It has been found by experience that if some means could be devised td regulate the tension of the drawing-rollers on the cloth the capacity of the gig-mill for clothdressing would be much increased, as very light as well as very heavy cloths might be' dressed in a mill having such: an improvement. To attain suchend, I make the two ipper rollers have adjustable distances from the napping-cylinder, to vary tension on the shaft of roller K, near its bearings, are the quadrant-a1 head-piecesda L, (shown in Figs. 1 and 2,) and having slots 70 k. i

In the head-pieces are mounted the drawing'rollersK K, having their line of adjust.- ment in the arc of a circle, and retained in any adjusted position by means of the slot k, sliding on a pin when'adjusting, then held in position by setscrews. (See Fig. 2.) This construction and arrangement allow the tension on the cloth being dressed to be regulated according to weight of cloth, so that light cloths may be dressed without danger of strain-' iug them in the operation. Direct rotatory motion is given to the drawing-rollers by the train of gearing Z, M, N, and 0, Fig. 1, and P Q B, Fig. 2. Reverse motion is given by. throwing gearwheel N out ofgear with O and gear-wheel S into gear wi'thO by means of. the reversing device T, constructed in a triangular form and having its center bearing on the shaft of the nappingcylinder. At

gear-wheels M and M, and at the lower corner is a stud carrying the gear-wheels. To the lower side of this triangular frame is affixed an arched slot sliding on apin provided with a set-screw. When the gearing is adjusted as desired, the set-screw holds the same in adjusted position, the whole constructed in the manner as shownfpartly by dotted lines in Fig. 1, and is substantially the same as in common use and well-known topersons skilled in constructingjmachine'ry. p I U is a passage-way or shield for the cloth when passing below the teaseling-cylinder, and is for the purpose of protectingthe cloth from dust or-waste matter falling from the teasels during the operation of .na'pping.

V is an auxiliary drawing-roller employed in combination with the adjustable rollers K K K, and taking its motion by belt from apulley on the driving-shaft of the drawingroller K, that it may have the same velocity of contact on the surface of the cloth that the adjustable rollers have.

The foregoing description of my machine is limited to describing the improvements made and to such old parts in commonuse as to show the connection of the improved with the old parts, this description being deemed sufliciently explicit for those persons skilled in the art of constructing such machines.

The operation of napping cloth in my, inaarranged in the mill and the ends sewed together, forming, as it were, an endless apron, in the manner as shown by the blue lines in Figs. 1 and 2. The adjusting and drawing adjustment in the manner as before described the mill is'ready for work, and is set in motion by applying power to the main drivingrpulley by straight and cross belts for either direct or reverse revolutions of napping-cylinder, as

g torsof cloth machinery. This mode of the upper corner is a stud or pincarrying the chine is thus: The cloth is passed through and rollers being properly adjusted and set in $1162..

wanted, in the manner well known to opera;

h exeration permits the nap to be raised from hoth directions without the necessity of changing the cloth end for end by handling, as done in old methods, thus securing a finer and more even nap on the cloth.

In my improvements, as described, I wish to be understood to lay no broad or exclusive claims to a napping cylinder or cylinders heretofore of known construction and use or any exclusive claim to drawing rollers, or any broad claim to stretching-rollers irrespective of their peculiar construction, or to tumbling or adjusting rollers substantially in common use; nordo I lay any broad or exclusiveelaim irrespective of any special arrangementk of parts of machinery for such purpose to the method of raising a nap on the clothlongitud-inally in both directions, reverse and'direct,.

without the necessity of shifting the cloth in the mill by hand before such end can be attained; but

\Vhat I do claim as new, and desire to secure by Letters Patent,-is-

1. The back-side napping-roller F, con-i strncted substantially in the manner as herein described and shown, andoperating in the manner and for the purposes as herein specified.

3'. In combination with the improved map ping-cylinder B, having either a direct or reverse revolntion at will, as herein described,

the general arrangement of the adjustable rollers E E, the back-side napping-roller F, the stretching-rollers J or Z, the adjustable drawing-rollers K K K and the auxiliary drawingroller V, for the purpose of napping blankets and both sides of the cloth together or at one operation and raising the nap longitudinally in both directions, direct and reverse, withont the necessity of shifting the cloth in the machine by hand, end for end or side for side, before each operation can be completed.

JOHN C. MILLAR. \Vitnesses.

JAMES H. WORDEN,

J. J. SAVAGE. 

